121034556 has 72 divisors (see below), whose sum is σ = 322043904. Its totient is φ = 38253600.

The previous prime is 121034531. The next prime is 121034569. The reversal of 121034556 is 655430121.

121034556 is a `hidden beast` number, since 1 + 2 + 103 + 4 + 556 = 666.

It is a super-2 number, since 2×121034556² = 29298727492234272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104581 + ... + 105731.

It is an arithmetic number, because the mean of its divisors is an integer number (4472832).

Almost surely, 2^121034556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121034556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161021952).

121034556 is an abundant number, since it is smaller than the sum of its proper divisors (201009348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121034556 is a wasteful number, since it uses less digits than its factorization.

121034556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 121034556 is about 11001.5706151440. The cubic root of 121034556 is about 494.6558244157.

Adding to 121034556 its reverse (655430121), we get a palindrome (776464677).

The spelling of 121034556 in words is "one hundred twenty-one million, thirty-four thousand, five hundred fifty-six".